<html>
<head>

<title>class test</title>
</head>
<body>
<script type="text/javascript">
function af(){
	
	window.setTimeout(arun,0);
}
function arun(){
	while(true)
		alert("arun");
}

function bf(){
	window.setTimeout(brun,0);
}

function brun(){
	while(true)
		alert("brun");
}

af();
bf();

</script>
</body>
</html>
